/* -----------------------------------------------------------------------------
   Holonograph — The Guide (light mode)
   Shared stylesheet for every /guide/*.html page.

   The Guide is deliberately a different room from the manifesto landing:
   quiet, prose-first, reference-grade. Same palette family (iris purple),
   same typography (Kodchasan / Inter), but light background, no cube,
   no ambient breathing. The instrument's manual, not its poster.
   ----------------------------------------------------------------------------- */

:root {
  --bg: #f7f5f0;                             /* warm off-white, slight cream */
  --bg-elev: #ffffff;                        /* elevated cards / code */
  --bg-sunk: #f0ecf5;                        /* subtle purple wash for pull-quotes */
  --fg: #1a1524;                             /* near-black, slight indigo cast */
  --fg-dim: #4b4560;                         /* body de-emphasis */
  --fg-faint: #8a839c;                       /* captions, meta */
  --fg-ghost: #c4bfd0;                       /* rules, dividers */
  --accent: #6d28d9;                         /* deep iris — passes AA on the light bg */
  --accent-hover: #5b21b6;
  --accent-soft: #ede9fe;                    /* accent-tinted surface */
  --rule: #e8e2ee;                           /* light lavender rule */
  --code-bg: #f4f0f8;
  --code-fg: #2a1f4a;
  --danger: #b91c1c;                         /* wall-warning red, used sparingly */
  --font-ui: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Kodchasan", ui-sans-serif, system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 68ch;                           /* prose column max */
  --sidebar-w: 260px;
}

* , *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- top bar: brand link + version pill + back-to-landing ---------- */
.guide-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px clamp(20px, 3vw, 40px);
  background: rgba(247, 245, 240, 0.88);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--rule);
}
.guide-brand {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 15px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
  background: linear-gradient(100deg, #1a1524 0%, var(--accent) 40%, #1a1524 70%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  transition: background-position 300ms ease;
}
.guide-brand:hover { background-position: 100% 50%; }
.guide-topbar-sep {
  color: var(--fg-ghost);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.guide-crumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.guide-crumb a {
  color: var(--fg-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms, border-color 180ms;
}
.guide-crumb a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.guide-topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.guide-version {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  padding: 4px 10px;
  border-radius: 999px;
}
.guide-back-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 180ms;
}
.guide-back-link:hover { color: var(--accent); }
.guide-back-link::before { content: "‹ "; }

/* ---------- page shell: sidebar + main column ---------- */
.guide-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(32px, 5vw, 56px) clamp(20px, 3vw, 40px) 80px;
}
@media (max-width: 900px) {
  .guide-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding-top: 24px;
  }
}

/* ---------- sidebar TOC ---------- */
.guide-sidebar {
  position: sticky;
  top: 68px;
  align-self: start;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
  padding-right: 8px;
  font-size: 13.5px;
}
.guide-sidebar-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}
.guide-sidebar ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.guide-sidebar li {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 6px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
}
.guide-sidebar .s-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  opacity: 0.75;
}
.guide-sidebar .s-ttl {
  color: var(--fg-dim);
  text-decoration: none;
  line-height: 1.35;
  transition: color 180ms;
}
.guide-sidebar .s-ttl:hover { color: var(--accent); }
.guide-sidebar li.current .s-ttl { color: var(--fg); font-weight: 600; }
.guide-sidebar li.current { background: var(--accent-soft); margin: 0 -8px; padding: 8px; border-radius: 6px; border-bottom-color: transparent; }
.guide-sidebar li.current .s-num { opacity: 1; }
.guide-sidebar .s-status {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  align-self: center;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--fg-ghost);
  background: transparent;
  white-space: nowrap;
}
.guide-sidebar .s-status.status-live { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 30%, transparent); background: var(--accent-soft); }
.guide-sidebar .s-status.status-draft { color: #a16207; border-color: #eab30833; background: #fef9c322; }
.guide-sidebar .s-status.status-in-review { color: #b45309; border-color: #f59e0b33; background: #fed7aa22; }

/* ---------- main article ---------- */
.guide-main {
  min-width: 0;
}
.guide-main article {
  max-width: var(--measure);
}
.guide-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}
.guide-h1 {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(32px, 4.4vw, 48px);
  letter-spacing: -0.005em;
  line-height: 1.2;
  margin: 0 0 6px;
  padding-bottom: 0.14em;              /* room for descenders (g, y, p) — background-clip: text clips them otherwise */
  background: linear-gradient(100deg, #1a1524 0%, var(--accent) 30%, #6b21a8 55%, #1a1524 80%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.guide-h1-tm {
  font-size: 0.4em;
  vertical-align: super;
  font-weight: 400;
  margin-left: 0.06em;
  -webkit-text-fill-color: currentColor;
  color: var(--fg-faint);
}
.guide-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin: 0 0 32px;
}
.guide-meta .dot { margin: 0 8px; opacity: 0.5; }

.guide-main h2 {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: clamp(20px, 2.3vw, 24px);
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 44px 0 14px;
  color: var(--fg);
  padding-top: 6px;
}
.guide-main h2::before {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 12px;
  opacity: 0.8;
}
.guide-main h3 {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.005em;
  line-height: 1.35;
  margin: 28px 0 8px;
  color: var(--fg);
}
.guide-main p {
  margin: 0 0 14px;
  color: var(--fg-dim);
}
.guide-main strong { color: var(--fg); font-weight: 600; }
.guide-main em { font-style: italic; color: var(--fg); }
.guide-main a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  transition: color 180ms, border-color 180ms;
}
.guide-main a:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }
.guide-main ul, .guide-main ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--fg-dim);
}
.guide-main li { margin: 6px 0; line-height: 1.6; }
.guide-main ul li::marker { color: var(--accent); }

/* ---------- pull-quote / lede ---------- */
.guide-lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--fg);
  margin: 0 0 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}
.guide-callout {
  background: var(--bg-sunk);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  margin: 20px 0;
  border-radius: 0 6px 6px 0;
  font-size: 14.5px;
  color: var(--fg-dim);
}
.guide-callout strong { color: var(--fg); }
.guide-callout .callout-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

/* ---------- code ---------- */
.guide-main code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1.5px 6px;
  border-radius: 4px;
  border: 1px solid var(--rule);
}
.guide-main pre {
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  margin: 0 0 20px;
}
.guide-main pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* ---------- reference tables (endpoint/response fields) ---------- */
.guide-table-wrap { overflow-x: auto; margin: 0 0 20px; }
.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.guide-table th, .guide-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.guide-table th {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  font-weight: 500;
  background: var(--bg-elev);
}
.guide-table td:first-child code { background: transparent; border: 0; padding: 0; color: var(--accent); }

/* ---------- next / prev nav at page bottom ---------- */
.guide-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}
.guide-nav a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  text-decoration: none;
  background: var(--bg-elev);
  transition: border-color 180ms, transform 180ms, background 180ms;
}
.guide-nav a:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}
.guide-nav .nav-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 4px;
}
.guide-nav .nav-title {
  display: block;
  font-weight: 600;
  color: var(--fg);
  font-size: 15px;
  line-height: 1.3;
}
.guide-nav .nav-next { text-align: right; grid-column: 2; }
.guide-nav .nav-prev { grid-column: 1; }
.guide-nav .nav-prev .nav-label::before { content: "‹ "; }
.guide-nav .nav-next .nav-label::after { content: " ›"; }
.guide-nav a.nav-empty { visibility: hidden; }
@media (max-width: 640px) {
  .guide-nav { grid-template-columns: 1fr; }
  .guide-nav .nav-next, .guide-nav .nav-prev { grid-column: 1; text-align: left; }
}

/* ---------- footer ---------- */
.guide-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px clamp(20px, 3vw, 40px) 40px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.guide-footer a { color: var(--fg-dim); text-decoration: none; }
.guide-footer a:hover { color: var(--accent); }

/* ---------- index page: hero + card grid ---------- */
.guide-index-hero {
  max-width: 900px;
  margin: 0 auto 44px;
  padding: 0 8px;
  text-align: left;
}
.guide-index-hero .guide-h1 { margin-bottom: 14px; }
.guide-index-hero .guide-lede { border-bottom: 0; padding-bottom: 0; }
.guide-index-hero .guide-epigraph {
  font-style: italic;
  font-size: 15px;
  color: var(--fg-dim);
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 16px;
  margin: 4px 0 22px;
}

.guide-toc-full {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 8px;
  list-style: none;
}
.guide-toc-full li {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 18px 4px;
  border-bottom: 1px solid var(--rule);
}
.guide-toc-full li:first-child { border-top: 1px solid var(--rule); }
.guide-toc-full .t-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  opacity: 0.75;
}
.guide-toc-full .t-body { min-width: 0; }
.guide-toc-full .t-ttl {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
  letter-spacing: -0.005em;
  text-decoration: none;
  line-height: 1.3;
}
.guide-toc-full .t-ttl:hover { color: var(--accent); }
.guide-toc-full li[data-status="soon"] .t-ttl { color: var(--fg-dim); cursor: default; pointer-events: none; }
.guide-toc-full .t-gloss {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--fg-dim);
  line-height: 1.5;
}
.guide-toc-full .t-status {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  align-self: center;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--fg-ghost);
  white-space: nowrap;
}
.guide-toc-full li[data-status="live"] .t-status {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 32%, transparent);
  background: var(--accent-soft);
}
.guide-toc-full li[data-status="draft"] .t-status {
  color: #a16207;
  border-color: #eab30840;
  background: #fef9c322;
}
.guide-toc-full .t-wave {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-left: 8px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px dashed var(--rule);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .guide-toc-full li { grid-template-columns: 32px 1fr; gap: 10px; padding: 14px 2px; }
  .guide-toc-full .t-status { grid-column: 2; justify-self: start; margin-top: 8px; align-self: start; }
}

/* ---------- audience router (index page) ---------- */
.guide-router {
  max-width: 900px;
  margin: 0 auto 40px;
  padding: 22px 24px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 10px;
}
.guide-router h2 {
  margin: 0 0 4px !important;
  font-size: 13px !important;
  font-family: var(--font-mono) !important;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint) !important;
  font-weight: 500 !important;
  padding-top: 0 !important;
}
.guide-router h2::before { display: none !important; }
.guide-router table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 14px; }
.guide-router th, .guide-router td { text-align: left; padding: 8px 8px; border-bottom: 1px solid var(--rule); }
.guide-router th { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-faint); font-weight: 500; }
.guide-router td:first-child { font-weight: 600; color: var(--fg); }
.guide-router tr:last-child td { border-bottom: 0; }

/* ---------- phones ---------- */
/* Phone-tier tuning. Below 720px the sticky-sidebar layout becomes a flat block
   which shoves the article below 14 chapter titles; hide it entirely on phones
   (the top-bar "all chapters" link + the prev/next nav at the bottom of each
   chapter cover navigation cleanly). Meanwhile shrink type + tighten padding
   so prose reads comfortably at 375–414px widths. */
@media (max-width: 720px) {
  /* Topbar — compact, single-line, drop the redundant back-link (brand is the link). */
  .guide-topbar {
    padding: 10px clamp(12px, 4vw, 20px);
    gap: 8px;
  }
  .guide-brand { font-size: 13px; letter-spacing: 0.20em; }
  .guide-crumb { font-size: 10px; letter-spacing: 0.10em; }
  .guide-topbar-right { gap: 8px; }
  .guide-version { font-size: 9px; padding: 3px 8px; letter-spacing: 0.12em; }
  .guide-back-link { display: none; }

  /* Sidebar — hide on phones. Prev/next + topbar handles nav. */
  .guide-sidebar { display: none; }

  /* Shell — tighter frame, single column already inherited from @900. */
  .guide-shell { padding: 22px 16px 60px; gap: 0; }
  .guide-main article { max-width: 100%; }

  /* Article typography — right-sized for phone widths. */
  .guide-eyebrow { font-size: 10px; letter-spacing: 0.20em; margin-bottom: 10px; }
  .guide-h1 { font-size: clamp(26px, 8vw, 34px); line-height: 1.15; margin-bottom: 4px; }
  .guide-meta { font-size: 10px; letter-spacing: 0.12em; margin-bottom: 24px; }
  .guide-lede { font-size: 16px; line-height: 1.55; padding-bottom: 18px; margin-bottom: 22px; }
  .guide-main h2 { font-size: 18px; margin: 32px 0 12px; padding-top: 4px; }
  .guide-main h2::before { width: 28px; margin-bottom: 10px; }
  .guide-main h3 { font-size: 15.5px; margin: 22px 0 6px; }
  .guide-main p, .guide-main li { font-size: 15px; line-height: 1.65; }
  .guide-main ul, .guide-main ol { padding-left: 20px; }

  /* Callout — tighter side padding on narrow screens. */
  .guide-callout { padding: 12px 14px; font-size: 14px; }

  /* Tables — smaller cells so 3-column tables fit without hard-wrapping. */
  .guide-table { font-size: 12.5px; }
  .guide-table th, .guide-table td { padding: 8px 10px; }
  .guide-table th { font-size: 9.5px; letter-spacing: 0.10em; }

  /* Code — larger inline than desktop-tiny; readable pre. */
  .guide-main code { font-size: 0.86em; padding: 1.5px 5px; }
  .guide-main pre { padding: 12px 14px; font-size: 12px; border-radius: 6px; }

  /* Prev/Next nav — bigger tap targets, single column. */
  .guide-nav { grid-template-columns: 1fr; gap: 10px; margin-top: 40px; padding-top: 22px; }
  .guide-nav a { padding: 14px 16px; }
  .guide-nav .nav-label { font-size: 9.5px; letter-spacing: 0.16em; }
  .guide-nav .nav-title { font-size: 14.5px; }

  /* Footer — stacked. */
  .guide-footer { padding: 20px 14px 32px; flex-direction: column; gap: 6px; font-size: 9.5px; letter-spacing: 0.10em; }

  /* Index page hero. */
  .guide-index-hero { margin-bottom: 32px; padding: 0; }
  .guide-index-hero .guide-h1 { font-size: clamp(28px, 9vw, 38px); }
  .guide-index-hero .guide-lede { font-size: 16px; }
  .guide-index-hero .guide-epigraph { font-size: 14px; padding-left: 12px; }

  /* Audience router — smaller table, less padding. */
  .guide-router { padding: 16px 14px; margin-bottom: 32px; }
  .guide-router h2 { font-size: 12px !important; }
  .guide-router table { font-size: 12.5px; margin-top: 10px; }
  .guide-router th, .guide-router td { padding: 6px 4px; }
  .guide-router th { font-size: 9px; letter-spacing: 0.10em; }

  /* Chapter index — bigger tappable rows. */
  .guide-toc-full li { padding: 16px 2px; grid-template-columns: 30px 1fr; gap: 10px; }
  .guide-toc-full .t-num { font-size: 12px; }
  .guide-toc-full .t-ttl { font-size: 16px; line-height: 1.35; }
  .guide-toc-full .t-gloss { font-size: 13px; line-height: 1.5; margin-top: 5px; }
  .guide-toc-full .t-status { font-size: 8.5px; padding: 3px 8px; margin-top: 8px; }
}

/* Very narrow phones (≤400px, e.g. iPhone SE portrait). */
@media (max-width: 400px) {
  .guide-topbar { padding: 8px 12px; flex-wrap: wrap; }
  .guide-crumb { flex-basis: 100%; margin-top: 2px; }
  .guide-h1 { font-size: 24px; }
  .guide-main pre { font-size: 11.5px; padding: 10px 12px; }
  .guide-shell { padding-left: 12px; padding-right: 12px; }
}

/* ---------- print ---------- */
@media print {
  .guide-topbar, .guide-sidebar, .guide-nav, .guide-footer { display: none; }
  .guide-shell { grid-template-columns: 1fr; padding: 20px; }
  a { color: var(--fg); text-decoration: none; border: 0; }
}